Isocyanuric Ring Surface Layer for Photosensitive Member Stability
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Solution Overview
Problem
Electrophotographic photosensitive members exhibit significant differences in electrical characteristics due to environmental fluctuations, particularly between high temperature and high humidity and low temperature and low humidity environments, leading to variations in image density.
Innovation Solution
Incorporating a compound with an isocyanuric ring skeleton and hydroxy or carboxy groups in the surface layer of the electrophotographic photosensitive member, which attracts and binds moisture, thereby reducing its impact on the charge generating substances and stabilizing electrical characteristics across varying environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional surface layers are used in electrophotographic photosensitive members, then mechanical strength is improved, but electrical characteristics vary significantly with environmental fluctuations
Solution Approach 1:
The patent introduces a specific chemical compound with an isocyanuric ring skeleton and hydroxy or carboxy groups that fundamentally changes the surface layer's interaction with moisture. This compound alters the electrical characteristics by controlling moisture distribution, thereby stabilizing performance across different environmental conditions while preserving mechanical strength
Solution Approach 2:
The surface layer is formulated as a composite material containing the isocyanuric ring compound combined with other components. This composite structure leverages the unique moisture-attracting properties of the isocyanuric ring compound while maintaining the mechanical strength provided by the overall surface layer composition
2Productivity
If the electrophotographic photosensitive member is designed for high printing speed, then productivity is improved, but the demand for longer life and environmental stability increases
Solution Approach 1:
The patent focuses on extending the operational life of the photosensitive member through the use of the isocyanuric ring compound, which stabilizes electrical characteristics and prevents degradation from environmental fluctuations, thereby enabling sustained high-speed printing operations
Solution Approach 2:
The introduction of the isocyanuric ring compound changes the moisture interaction parameters of the surface layer, creating a more stable electrical environment that supports continuous high-speed operation without degradation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed solution effectively suppresses environmental fluctuations, maintaining consistent electrical characteristics and image density across different use environments, enhancing the reliability of electrophotographic image forming apparatuses.
Implementation Method 1
a surface layer, wherein the surface layer contains a compound represented by the following formula (1)... which attracts and binds moisture
Data Source
AI summary
It is an object of the present invention to provide an electrophotographic photosensitive member capable of suppressing the environmental fluctuation in the electrical characteristics. The present invention provides the electrophotographic photosensitive member in which the surface layer contains the compound having the specific structure.